Chess South Africa Ratings Database

PLAYER PAGE

Personal

Joubert, B (Bethany)

Chess SA id

2120136884

FIDE id

Date of birth

2012-05-25 (U14)

Gender

Female

Region

Buffalo City (EBC)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-20

Personal details last changed

1900-01-01

Junior GPX Games

36.9

Junior GPX Points

1021.2

Item	Main	Standard	Rapid	Blitz
Rating	1200.9	1211.6	1139.1	1200
Raw rating	1156.6	1148.1	1139.1	1200
Weighted rating	1200.9	1211.6	1114.1	1200
Weighted performance	1118.1	1106.4	1022	0
Floor	722.8	731.5	720	700
K-factor	36	36	36	36
Min/Max rating change allowed	176.4	178.5	180.9	165.8
Highest rating	1236.3 2024-05-01	1236.1 2024-05-01	1279.5 2022-05-01	1200 2018-10-01
Highest raw rating	1222.8 2024-06-01	1231.5 2024-06-01	1220 2022-06-01	1200 2024-03-01
Highest weighted rating	1222.8 2018-10-01	1215.9 2025-09-01	1220 2022-08-01	1200 2018-10-01
Highest weighted performance	1236.3 2024-05-01	1236.1 2024-05-01	1279.5 2022-05-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-2.6	-4.4	0	0
New rating	1198.3	1207.2	1139.1	1200
Analysis
Rating	1200.9	1211.6	1139.1	1200
Raw rating	1156.6	1148.1	1139.1	1200
Weighted rating	1200.9	1211.6	1114.1
Weighted performance	1118.1	1106.4	1022
K-factor	36	36	36	36
Floor	722.8	731.5	720	700
Max/Min rating change allowed	176.4	178.5	180.9	165.8
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1156.6	1148.1	1139.1	1200
New weighted rating	1198.3	1207.2	1116.7	1200
New weighted performance	1117.7	1106	1021.6	0
Temp new rating	1198.3	1207.2	1139.1	1200
Temp new rating +/-	-2.6	-4.4	0	0
Final new rating +/-	-2.6	-4.4	0	0
New rating	1198.3	1207.2	1139.1	1200
New K-factor	36	36	36	36
New floor	722.8	731.5	720	700

Item	Main	Standard	Rapid
	0	0	0
	51	32	19
	15	15	0
	31	24	7
	39	15	24
	0	0	0
History	136	86	50

Games since
	Main 66	Standard 47		Rapid 19		Blitz 0
Gender	Female
Age group	U14
Region	Buffalo City (EBC)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	4028		551		176
Female	975		115		40
U14	775		112		40
U14 Female	224		27		6
Standard
	RSA		Province		Region
Overall	3837		539		178
Female	915		108		40
U14	744		113		41
U14 Female	212		27		7
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	51	19	37.25	-108.3	1240.1	1131.8
Standard	32	10.5	32.81	-146.1	1260.7	1114.6
Rapid	19	8.5	44.74	-44.7	1205.6	1160.9
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	136	56	41.18	-75	1208.5	1133.5
Standard	86	35.5	41.28	-74.1	1214.4	1140.2
Rapid	50	20.5	41	-76.5	1198.5	1122
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1156.6	1148.1	1139.1	1200
2025-09-01	1204.7	1204.7	1139.1	1200
2025-08-01	1209.6	1215.4	1139.1	1200
2025-07-01	1199.1	1213.8	1125	1200
2025-06-01	1196.4	1211	1125	1200
2025-05-01	1194.3	1208.8	1125	1200
2025-04-01	1193	1208.6	1125	1200
2025-03-01	1200.1	1231.5	1125	1200
2025-02-01	1222.8	1231.5	1094.3	1200
2025-01-01	1222.8	1231.5	1093.7	1200
2024-12-01	1222.8	1231.5	1093.7	1200
2024-11-01	1222.8	1231.5	1093.7	1200
2024-10-01	1222.8	1231.5	1093.7	1200
2024-09-01	1222.8	1231.5	1093.7	1200
2024-08-01	1222.8	1231.5	1093.7	1200
2024-07-01	1222.8	1231.5	1093.7	1200
2024-06-01	1222.8	1231.5	1093.7	1200
2024-08-01	1192.6	1216.4	1093.7	1200
2024-04-01	1192.6	1216.4	1093.7	1200
2024-03-01	1174.3	1202.4	1093.7	1200
2024-02-01	1108.6	1128.8	1093.7	1200
2024-01-01	1108.6	1128.8	1093.7	1200
2023-12-01	1108.6	1128.8	1093.7	1200
2023-11-01	1108.6	1128.8	1093.7	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Buffalo City Chess Clubs League 2025 (C)	2025-09-20	2025-09-20	Standard	Buffalo City (EBC)	6	5	2	Yes	Analysis
2	EC Closed 2025 (U14 Girls)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	5	1	Yes	Analysis
3	Buffalo City Chess Junior Closed 2025 (U14 Girls)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
4	3rd Chess Vikings Open Championship 2025 (C)	2025-08-02	2025-08-02	Standard	Buffalo City (EBC)	6	5	2	Yes	Analysis
5	BC Schools Chess Festival 2025 (U13 Girls)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	5	0	0	No	Analysis
6	Beacon Bay Winter Cup 2025 (B)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	5	2	Yes	Analysis
7	2025 Buffalo City Chess Trials 3 (U14)	2025-05-10	2025-05-10	Standard	Buffalo City (EBC)	5	4	1.5	Yes	Analysis
8	2025 Buffalo City Chess Trials 1 (U14)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	4	1	Yes	Analysis
9	Vikings Classical March 2025 (B)	2025-03-15	2025-03-15	Standard	Buffalo City (EBC)	5	4	1	Yes	Analysis
10	Rapid Feb 2nd Leg 2025 (U14)	2025-02-21	2025-02-21	Rapid	Buffalo City (EBC)	8	7	3	Yes	Analysis
11	Rapid Feb Leg 1 2025 (U14)	2025-02-15	2025-02-15	Rapid	Buffalo City (EBC)	7	7	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Buffalo City Chess Clubs League 2025 (C)	2025-09-20	2025-09-20	Standard	Buffalo City (EBC)	6	5	2	Yes	Analysis
2	EC Closed 2025 (U14 Girls)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	5	1	Yes	Analysis
3	Buffalo City Chess Junior Closed 2025 (U14 Girls)	2025-08-16	2025-08-16	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
4	3rd Chess Vikings Open Championship 2025 (C)	2025-08-02	2025-08-02	Standard	Buffalo City (EBC)	6	5	2	Yes	Analysis
5	BC Schools Chess Festival 2025 (U13 Girls)	2025-07-26	2025-07-26	Standard	Buffalo City (EBC)	5	0	0	No	Analysis
6	Beacon Bay Winter Cup 2025 (B)	2025-07-09	2025-07-09	Rapid	Buffalo City (EBC)	6	5	2	Yes	Analysis
7	2025 Buffalo City Chess Trials 3 (U14)	2025-05-10	2025-05-10	Standard	Buffalo City (EBC)	5	4	1.5	Yes	Analysis
8	2025 Buffalo City Chess Trials 1 (U14)	2025-03-22	2025-03-22	Standard	Buffalo City (EBC)	5	4	1	Yes	Analysis
9	Vikings Classical March 2025 (B)	2025-03-15	2025-03-15	Standard	Buffalo City (EBC)	5	4	1	Yes	Analysis
10	Rapid Feb 2nd Leg 2025 (U14)	2025-02-21	2025-02-21	Rapid	Buffalo City (EBC)	8	7	3	Yes	Analysis
11	Rapid Feb Leg 1 2025 (U14)	2025-02-15	2025-02-15	Rapid	Buffalo City (EBC)	7	7	3.5	Yes	Analysis
12	3rd BC Trials 2024 (U14B)	2024-05-11	2024-05-11	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
13	2nd BC Trials 2024 (U14B)	2024-03-09	2024-03-09	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
14	Buffalo City Vikings Chess Trials 2024 (U14B+U14C)	2024-02-03	2024-02-03	Standard	Buffalo City (EBC)	5	5	4	Yes	Analysis
15	BC 5th Trials 2023 (U12B+U14B)	2023-09-02	2023-09-02	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
16	3rd BC Trials 2023 (U14B)	2023-08-12	2023-08-12	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
17	2nd BC Trials 2023 (U12A)	2023-06-03	2023-06-03	Rapid	Buffalo City (EBC)	7	7	2	Yes	Analysis
18	BC Chess Trials 1 of 5 2023 (Beginner)	2023-04-22	2023-04-22	Standard	Buffalo City (EBC)	5	5	3.5	Yes	Analysis
19	3rd Vikings Champs 2023 (U10C+U12C)	2023-03-25	2023-03-25	Standard	Buffalo City (EBC)	5	5	2.5	Yes	Analysis
20	2nd Little Vikings 2023 (U12B)	2023-02-23	2023-02-23	Standard	Buffalo City (EBC)	5	4	2	Yes	Analysis
21	Slum Knights 5th 2022 (B)	2022-10-22	2022-10-22	Standard	Buffalo City (EBC)	5	5	0	Yes	Analysis
22	Slum Knights 2nd Open 2022 (B)	2022-09-17	2022-09-17	Rapid	Buffalo City (EBC)	6	5	1.5	Yes	Analysis
23	Slum Knights 2022 (B)	2022-08-06	2022-08-06	Rapid	Buffalo City (EBC)	6	6	1.5	Yes	Analysis
24	BC Chess Trials 5 of 5 2022 (C)	2022-06-11	2022-06-11	Rapid	Buffalo City (EBC)	7	7	3.5	Yes	Analysis
25	BC Chess 4th Border Trials 2022 (C)	2022-05-21	2022-05-21	Rapid	Buffalo City (EBC)	6	6	3.5	Yes	Analysis
26	BC Trials 3 2022 (U10B+U12B)	2022-03-05	2022-03-05	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
27	BC Trials 1 2022 (U10B+U12B)	2022-02-11	2022-02-11	Standard	Buffalo City (EBC)	5	5	1	Yes	Analysis

#	Games	Start				End
1	5	Tournament 3rd Vikings Champs 2023				Tournament BC Chess Trials 1 of 5 2023
		date 2023-03-25	rnd 3	type Standard	result 1	date 2023-04-22	rnd 2	type Standard	result 1
		Opponent Tayi, M (Milani)				Opponent Mdukisi, A (Ambesa)
2	4	Tournament 2nd BC Trials 2024				Tournament 3rd BC Trials 2024
		date 2024-03-09	rnd 3	type Standard	result 1	date 2024-05-11	rnd 1	type Standard	result 1
		Opponent Uchendu, E (Excellent)				Opponent Mtembo, R (Raymond)
3	4	Tournament BC 5th Trials 2023				Tournament Buffalo City Vikings Chess Trials 2024
		date 2023-09-02	rnd 5	type Standard	result 1	date 2024-02-03	rnd 3	type Standard	result 1
		Opponent Mugerwa, A (Andrea)				Opponent Augustine, K (Kallen)

#	Games	Start				End
1	5	Tournament 3rd Vikings Champs 2023				Tournament BC Chess Trials 1 of 5 2023
		date 2023-03-25	rnd 3	type Standard	result 1	date 2023-04-22	rnd 2	type Standard	result 1
		Opponent Tayi, M (Milani)				Opponent Mdukisi, A (Ambesa)
2	4	Tournament 2nd BC Trials 2024				Tournament 3rd BC Trials 2024
		date 2024-03-09	rnd 3	type Standard	result 1	date 2024-05-11	rnd 1	type Standard	result 1
		Opponent Uchendu, E (Excellent)				Opponent Mtembo, R (Raymond)
3	4	Tournament BC 5th Trials 2023				Tournament Buffalo City Vikings Chess Trials 2024
		date 2023-09-02	rnd 5	type Standard	result 1	date 2024-02-03	rnd 3	type Standard	result 1
		Opponent Mugerwa, A (Andrea)				Opponent Augustine, K (Kallen)

#	Games	Start				End
1	3	Tournament BC Chess Trials 5 of 5 2022				Tournament BC Chess Trials 5 of 5 2022
		date 2022-06-11	rnd 5	type Rapid	result 0.5	date 2022-06-11	rnd 7	type Rapid	result 0.5
		Opponent Van Der Merwe, L (Lane)				Opponent Scheeld, L (Liam)
2	2	Tournament Beacon Bay Winter Cup 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-07-09	rnd 3	type Rapid	result 1	date 2025-07-09	rnd 4	type Rapid	result 1
		Opponent Yoba, B (Bulumko)				Opponent Xu, Z (Zheyi)
3	2	Tournament Rapid Feb Leg 1 2025				Tournament Rapid Feb Leg 1 2025
		date 2025-02-15	rnd 5	type Rapid	result 1	date 2025-02-15	rnd 6	type Rapid	result 1
		Opponent Louw, D (David)				Opponent King, A (Awande)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament BC 5th Trials 2023				Tournament Buffalo City Vikings Chess Trials 2024
		date 2023-09-02	rnd 5	type Standard	result 1	date 2024-02-03	rnd 3	type Standard	result 1
		Opponent Mugerwa, A (Andrea)				Opponent Augustine, K (Kallen)
2	3	Tournament 3rd Vikings Champs 2023				Tournament BC Chess Trials 1 of 5 2023
		date 2023-03-25	rnd 5	type Standard	result 1	date 2023-04-22	rnd 2	type Standard	result 1
		Opponent Hallam, S (Samkelisiwe)				Opponent Mdukisi, A (Ambesa)
3	2	Tournament Beacon Bay Winter Cup 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-07-09	rnd 3	type Rapid	result 1	date 2025-07-09	rnd 4	type Rapid	result 1
		Opponent Yoba, B (Bulumko)				Opponent Xu, Z (Zheyi)

#	Games	Start				End
1	4	Tournament BC 5th Trials 2023				Tournament Buffalo City Vikings Chess Trials 2024
		date 2023-09-02	rnd 5	type Standard	result 1	date 2024-02-03	rnd 3	type Standard	result 1
		Opponent Mugerwa, A (Andrea)				Opponent Augustine, K (Kallen)
2	3	Tournament 3rd Vikings Champs 2023				Tournament BC Chess Trials 1 of 5 2023
		date 2023-03-25	rnd 5	type Standard	result 1	date 2023-04-22	rnd 2	type Standard	result 1
		Opponent Hallam, S (Samkelisiwe)				Opponent Mdukisi, A (Ambesa)
3	2	Tournament 2025 Buffalo City Chess Trials 3				Tournament 3rd Chess Vikings Open Championship 2025
		date 2025-05-10	rnd 5	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Mkebe, Y (Yavela)				Opponent Majiza, I (Isandisele)

#	Games	Start				End
1	2	Tournament Beacon Bay Winter Cup 2025				Tournament Beacon Bay Winter Cup 2025
		date 2025-07-09	rnd 3	type Rapid	result 1	date 2025-07-09	rnd 4	type Rapid	result 1
		Opponent Yoba, B (Bulumko)				Opponent Xu, Z (Zheyi)
2	2	Tournament Rapid Feb Leg 1 2025				Tournament Rapid Feb Leg 1 2025
		date 2025-02-15	rnd 5	type Rapid	result 1	date 2025-02-15	rnd 6	type Rapid	result 1
		Opponent Louw, D (David)				Opponent King, A (Awande)
3	2	Tournament 2nd BC Trials 2023				Tournament 2nd BC Trials 2023
		date 2023-06-03	rnd 2	type Rapid	result 1	date 2023-06-03	rnd 3	type Rapid	result 1
		Opponent Hallam, S (Samkelisiwe)				Opponent Mafanya, M (Mateo)

No games found.

#	Games	Start				End

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Strydom ,M (Maliyah)	4	2	0	2	2	425	2	0	-425	0	0	0
1	Strydom ,M (Maliyah)	4	1110.2	1110.2	2	1093.2	1535.2	2	1200	685.2	0	0	0
2	Kleynhans ,R (Rachelle)	3	1	-141.7	2	0	-425	1	1	425	0	0	0
2	Kleynhans ,R (Rachelle)	3	1169.7	1028.1	2	1152.2	744.7	1	1098.5	1594.7	0	0	0
3	Mkebe ,Y (Yavela)	3	2	141.7	2	2	425	1	0	-425	0	0	0
3	Mkebe ,Y (Yavela)	3	1148.2	1289.9	2	1196	1573.2	1	1090	723.2	0	0	0
4	Basson ,Z (Zachary)	3	1.5	0	0	0	0	3	1.5	0	0	0	0
4	Basson ,Z (Zachary)	3	1126.6	1126.6	0	0	0	3	1188.1	1126.6	0	0	0
5	Christensen ,M (Mia)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Christensen ,M (Mia)	2	1375.3	950.3	2	1381.4	950.3	0	0	0	0	0	0
6	Ngcobo ,M (Mofenyi)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Ngcobo ,M (Mofenyi)	2	1222.1	797.1	2	1227	797.1	0	0	0	0	0	0
7	Thulo ,K (Kananelo)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Thulo ,K (Kananelo)	2	1190.6	765.6	2	1188.2	765.6	0	0	0	0	0	0
8	Harman ,R (Ryan)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Harman ,R (Ryan)	2	1291.6	866.6	2	1299.8	866.6	0	0	0	0	0	0
9	Balfour ,O (Omeleza)	2	0	-425	1	0	-425	1	0	-425	0	0	0
9	Balfour ,O (Omeleza)	2	1242.6	817.6	1	1338	817.6	1	1143.9	817.6	0	0	0
10	Majiza ,I (Isandisele)	2	2	425	1	1	425	1	1	425	0	0	0
10	Majiza ,I (Isandisele)	2	1149.2	1574.2	1	1141.8	1574.2	1	1200	1574.2	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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Statistics

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PLAYER PAGE

Personal

Joubert, B (Bethany)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms